Q: What are the prime factors of the number 313,220,325?

 A: 3, 5, 11, 17, 23, 971

Why are those the prime factors of the number 313,220,325?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 313,220,325

313,220,325
Factor Arrows
3104,406,775
Factor Arrows
520,881,355
Factor Arrows
54,176,271
Factor Arrows
11379,661
Factor Arrows
1722,333
Factor Arrows
23971

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

3, 5, 11, 17, 23, 971

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 11 x 17 x 23 x 971 = 313,220,325

This can also be written as 31 x 52 x 111 x 171 x 231 x 9711 = 313,220,325

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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